Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

इंटरनेट मानक

“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda

“Invent a New India Using Knowledge”

“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru

“Step Out From the Old to the New”

“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan

“The Right to Information, The Right to Live”

“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam

“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 2032-15 (1976): Graphical symbols used inelectrotechnology, Part 15: Aircraft electrical symbols[ETD 1: Basic Electrotechnical Standards]

IS : 2932 (Part XV) - 1976

Indian Standard GRAPHICAL SYMBOLS

USED IN ELECTROTECHNOLOGY PART XV AIRCRAFT ELECTRICAL SYMBOLS

( First Reprint OCTOBER 1988 )

UDC 629.13.066:621.3:003.62

@ Copyright 1976

BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

Gr 7 June 1976

_.

Is t 2932 (Part XV) - 1976

Indian Standard GRAPHICAL SYMBOLS

USED IN ELECTROTECHNOLOGY PART XV AIRCRAFT ELECTRICAL SYMBOLS

Electrotechnical Standards Sectional Committee, ETDC 1

Chairman Representing

SIIRRI J. S. ZAVERI Bharat Bijlee Ltd, Bombay; and Rotating Machinery Sectional Committee, ETDC 15, ISI

Members

SHRI H. V. BADRINATH Wireless Planning & Co-ordination Wing, Ministry of Communications, New Delhi

&RI V. K. BATRA National Physical Laboratory (CSIR), New Delhi DR A. S. BHADURI National Test House, Calcutta SHRI M. R. BHAT Conductors & Cables Sectional Committee,

ETDC 32, IS1 SHR~ V. S. BHATIA Switchgear & Controlgear Sectional Committee,

ETDC 17, IS1 SHRI V. W. CHEMBURKAR Indian Electrical Manufacturers’ Association,

SHRI R. M. NANAVATI (Alternate) Bombay

BRIG N. DAYAL LT COL M. H. PAI (Alternate)

Ministry of Defence (DGI)

DIRECTOR Electronics & Radar Development Establishment

DIRECZTOR (TED) (Ministry of Defence), Bangalore

Central Electricity Authority (Deptt of Power),

DEPUTY DIRECTOR (TED) (Alternate) Ministry of Energy

GENERAL MANAGER Directorate General of Posts & Telegraphs

DIRECTOR (TRANSMISSION) (Alternate) (Ministry of Communications), New Delhi

DR A. K. GOSWAMI Bharat Heavy Electricals Ltd, Bhopal SHRI S. N. MITRA Electronic Equipment Sectional Committee,

ETDC 24, IS1 SARI S. S. MURTHY PROF R. C. NARAYANAN

Institution of Engineers (India), Calcutta General Nomenclature & Svmbols Subcommittee

SHRI U. K. PATWARDHAN SHRI R. RADHAK~HNAN

ETDC 1:3, IS1 ’ Transformers Sectional Committee, ETDC 16, ISI Central Electrochemical Research Institute (CSIR),

Karaikudi SHRI H. N. VENKOBARAO (Alfema~e)

SHRI K. N. RAMA~WAMY Electrical Wiring Accessories Sectional Committee, ETDC 44, IS1

DR T. S. M. RAO Relays Sectional Committee, ETDC 35, ISI (Continued on page 2)

Q Copyrght 1976 BUREAU OF INDIAN SfANDARDS

This publication is firotected under the In&m Copyrfght Act (XIV of 1957) and reproduction in whole or in part by a”y means except with written permission of the publisher shall be deemed to be an Infringement of copyright under the said Act.

II3 t 2032 (Part XV) - 1976

(co~tcedfiom page 1)

Mambers Refirasanting DR H. V. K. UDUPA Secondary Cells & Batteries Sectional Committee,

ETDC 11, IS1 DK B. H. WADIA Semiconductor Devices & Integrated Circuits

Sectional Committee, ETDC 40, ISI SHRI N. SRIHIVASAN,

Director (Elec tech) Director General, I$1 (Ex-ofiio Member)

Secretary SHRI JAGDISH CHANDRA

Assistant Director (Elec tech), 181

Aircraft Electrical Equipment Sectional Committee, ETDC 55 Chairman

GP CAST P. GOPALAN Aeronautical Development Establishment, Ministry of Defence, Bangalore

Members SQN LDR G. B. SINGH (Alternata to

Gp Capt P. Gopalan) SHRI H. V. BADRINATH Wireless Planning & Co-ordination Wing,

Ministry of Communications, New Delhi SHRI S. BALAKRXHNA SHRI U. C. BANERJEE

National Aeronautical Laborator$, Bangalore

SHRI M. S. EKBOTE (Altmatc) Indian Airlines Corporation, New Delhi

SHRI P. G. BARDE International Airports Authority of India, New Delhi

SHRI K. S. JAYARAM (Al&nale) WG CDR H. S. BHATIA Directorate of Technical Development and Pro-

SHRI H. C. PANDE (Altern&) duction (Air), Ministry of Defence, New Delhi

SHRI M. DEY Indian Cable Co Ltd, Calcutta SHRI S. BHATTAC~ARJEE (Ahmate)

SHIU A. N. GHOSH Development Commissioner, Small Scale Industries, New Delhi

SHR~ N. K. SEN GUPTA National Committee on Science and Technology, New Delhi

SHRI RAM KUMAR GUPTA Delton Cable Industries Pvt Ltd, Delhi SHRI S. P. CHAUDHRY ~Abrnats)

Hindustan Aeronautics Ltd. Banaalore WC CDR S. R. LAWHMINAR~YAN WC CDR G. VENKATESWARAN

SHRI R. NARASIMHAN SHRI S. K. PAL DR S. C. RAISINGHANI SHRI K. N. RAMASWAMY

(Alternate) . I

Civil Aviation Department, New Delhi Electronics Corporation of India Ltd, Hyderabad Indian Institute of Technology, Kanpur Directorate General of Technical Development

(DGTD), New Delhi SHRI R. K. GUPTA (Alternata)

SHR~ C. SITAPATI RAO

SHRI M. N. SOMASUNDARAM SHRI A. I. HYDER (Alterrule)

SHRI N. SRINIVASAN, Director (Elec tech)

Indian Space Research Organization (Vikram Sarabhai Space Centre), Trivandrum

Air India, New Delhi

Director General, BIS (Ex-oficio Member)

Secretary SHRI VIJAI

Assistant Director (Elec tech), BIS

n 2

IS : 2032 (Part XV) - 1976

Indian Standard GRAPHICAL SYMBOLS

USED IN ELECTROTECHNOLOGY PART XV AIRCRAFT ELECTRICAL SYMBOLS

0. FOREWORD

0.1 This Indian Standard (Part XV) was adopted by the Indian Standards Institution on 23 January 1976, after the draft finalized by the Electro- technical Standards Sectional Committee in consultation with the Air- craft Electrical Equipment ‘Sectional Committee had been approved by the Electrotechnical Division Council.

0.2 It is common in electrical engineering practice to employ graphical symbols to denote the various means and devices used when making diagrams of connections. With the object of making these diagrams easy to under- stand and universal in meaning, it has become necessary to standardize the basic symbols for various devices commonly used in the field of electrical engineering.

0.3 In the preparation of this standard assistance has been derived from IEC Pub 117-6 Recommended graphical symbols Part 6 : Aircraft miscel- laneous symbols issued by the International Electrotechnical Commission.

0.4 This standard is one of a series of Indian Standards on graphical symbols used in electrotechnology. A list of Indian Standards so far published in this series is given on P 26.

1. SCOPE

1.1 This standard (Part XV) covers graphical symbols for use in aircraft electrical systems.

2. GENERAL

2.1 Single-line representations are included for some symbols, and the same principles may be adopted for others, for use in diagrams which are intended to show the general layout of an electric circuit and its main component parts.

2.2 Orientation, relative dimensions, and points of attachment of conductors to a symbol .are optional.

3

Is t 2832 (Part XVI - 1976

2.3 The symbol for a terminal may be added at each point of attachment of conductors to a symbol, but it should not be considered as part of the symbol except where shown in the following groups of symbols.

2.4 For switch contacts, the circle and triang!e symbols are each used to indicate a specific duty, namely, the circle for ‘locked-on’ contacts and the triangle for contacts from which there is automatic spring return on release of the operating force, whether manual or magnetic.

2.5 Where alternative symbols are shown for a basic component either symbols may be used for the derived symbols but identical representation should be used on any one diagram or associated set of diagrams

3. SYSTEMS AND GENERAL

3.1 Direct Current (General)

3.2 Alternating Current (General)

3.3 AC Power Frequencies

3.4 AC Audio Frequencies

3.5 AC &per-Audio, Carrier and Radio Frequendes

3.6

3.7

3.8

3.9

Positive Polarity

Negative Polarity

Single Phase

Two Phase, Four Wire

+

-

I

I -

36.1 Two Phase, Three W‘re

3.10 Three Phase Winding, Delta

3.11 Three Phase Winding, Star

3.12 Three Phase Winding, Star, with Neutral Brought Out

3.13 Three Phase Winding, Tee Connected

3.14 Winding Six Phase, Fork, with Neutral Brought Out

3.15 Variability, Non-inherent

3.16 Contact, Adjustable

3.17

Thermal Sensitivity

5

IS : 2032 (Part XV) - 1976

A

/ Y-

T

x / )\

)_._“_--_” ._,__ -._-. .--... ._ ̂ _..._.. -.-.-__

IS : 2032 (Part XV) - 1976

3.23 Mechanical Coupling, Insulated

3.24 Mechanical Coupling, Non- insulated

3.25 Envelope of Component

3.26 Contour of Equipment

3.27 Screen, Electrostatic

4. FUNDAMENTAL COMPONENTS

4.1

4.2

4.3

4.4

Resistor, Fixed -f F

Resistor, Non-reactive

Voltage Divider with Fixed Tapping

Heater

4.5 Shunt

4.6 Resistor, Variable

4,7 Elesistor, Variable in Steps

4.8 Resistor with Preset Adjustnlent

___-__

I I

r--'--l L.-.-.-I

r-_____,

i_______;

-I I- I

--F_l-

IS : 2032 (Part XV) - 1976

4.9 Resistor with Moving Contact with ‘Off’ Position

4.10 Resistor, Variable, Carbon Pile vPe

4.11 Resistor with Inherent Non-linear Variability

4.12 Capacitor

4.13 Capacitor, Variable

4.14 Capacitor witkpreset Adjustment

4.15 Polarized Capacitor

4.16 Capacitor,.Lead Through

4.17 Winding

NOTE - A dot may be placed indicating start of winding showing instantaneous polarity for phasing purposes.

4.18 Inductor

4.19 Inductor with Core

4.20 Inductor, Variable

4.21 Inductor, Preset

-Gz!

-II-

-#-

-#-

+I-

-e-- I b

IS : 20x2 (Part XV) - 1976

4.22 Inductor, Tapped

4.23 Inductor, Saturable

4.24 Permanent Magnet

5. WIRING AND WIRING COMPO- NENTS

5.1 Conductor, General

NOTE- Lies may be thickened to show relative importance.

5.2 Conductors, Multiple

5.3 Conductors, Crossing without Electrical Connection

5.4 Conductors, Junctions

5.5 Conductors, Grouping of Leads

.NOTE- The bend in the line indicates the z;tion of the conductor joining the cable or

.

5.6 Conductors, Change of Representa- tiOP

5.7 Conductors, Unconnected and Insulated

Single Line Multi-Line Representation Representation

--

nI

+ =

,? __;;;

,+

-r-t+

_._,L~

8

5.8 Conductors, Twisted

5.9 Conductors, Screened

5.10 Conductors Twisted and Screened

5.11 Conductors Individually Screened and Twisted

5.12 Cable, Coaxial

5.13 Link, Conducting

5.14 Conductor Junction, In-line Splice

5.15 Terminal

5.16 Terminal Block

5.17 Plug

5.18 Socket

5.19 Plug and Socket

5.20 Connector, Free

5.21 Connector, Fixed

-3--

+I ) II=

9

__.. .__ _ .-_...-.-. .- -.-...-_-.-----..-

ls :.2032(PartXv)-1916

5.22 Connector, Mated

5.23 Connector, Coaxial Tee

5.24 Telephone Jack, Sleeve Contact

5.25 Telephotie Jack, Spring Contact

5.26 Telephone Jack, Three-Pole

5.27 Telephone Plug, Three-Pole

5.28 Preskre Seal, Lead Through (B-g)

5.23 Fuse, Prkctive

5.36 Earth (Airkune)

531 Ghassis. or Frame of Equipment

-x-- T

9

- -

1 T

6. SWITCHINGDEVIGES, MANUALLY AND REMcrrELY OPERATED

6,l Switch Element, Fixed Contact LockedonType

10

IS : 2832 (Part XV) - 1976

6.2 Switch Element, Fixed Contact Spring Return Type, that is, Contact Does Not Hold When Operating Force is Removed

6.3 Switch Element, Moving Contact

6.4 Switch Element, Moving Contact, Make Before Break

6.5 Switch Element, Moving Contact for Circait Breakers

6.6 Switch Element, Latching Mechan- ism (Need Not Normally Be Shown)

6.7 Operation by Manual Push

6.8 operation by Manual Push-Pull

6.9 Operation by, Inertia

6.10 Operation by Centrifi@ Force

6.11 Operation by Air Pressure (Aneroid Capsule)

6.12 Operation by Electromagnet

6.13 Switch, Manual, Single Pole On-Off

11

--J

--d

UNLATCHED

LATCHED

f

-2

c -6-- I

b-

IS : 2032 (Part XV) - 1976

6.14 Switch Manual, Two Pole On-Off

6.15 Switch, Manual, Triple Pole on-off

6.16 Switch, Manual, Single Pole, Changeover

6.17 Switch, Manual, Single Pole, Changeover with Central Off Position

6.18 Switch, Manual, Single Pole, Changeover with Spring Return from One Position

6.19 Switch, Manual, Single Pole, Changeover with Spring Return from Both Positions and with Central Off

6.20 Switch, Manual, Three Position and Off with Spring Return from One Position

--w+-- --d%-

4b- ---A- -d%--

<-

6.21 Switch, Manual, Push Type, Changeover with Spring Return

6.22 Switch, Manual, Push-Pull Type, Changeover

6.23 Switch, Manual, Rotary Type Four Position, Break Before Make

12

.

IS : 2032 (Part XV) - 1976

6.24 Switch, Manual, Rotary Type Four Position, Make Before Break

6.25 Switch, Inertia

6.26 Switch Centrifiqgal, Normally Closed

6.27 Switch Centrifugal, Normally

open

6.28 Switch, Pressure Operated (Aneroid Type)

6.29 Switch, Temperature Operated (Thermostat)

6.39 Circuit Breaker, Push Type

.

6.31 Circuit Breaker, Push-Pull Type, Double Pole

--3-f--

6.32 Circuit Breaker, Push-Pull Type, Triple Pole

6.33 Switch, Manual, Push Type with Magnetic Hold

13

IS : 2932 (Part XV) - 1976

6.34 Switch, Magnetic Relay, Single Pole Changeover

6.35 Switch, Magnetic, Triple Pole with Mechanical Latch which is Elec- tromagnetically Released and with Auxiliary Contacts

6.36 Switch, Mercury, Temperature Operated, with Compensating Winding

6.37 Switch, Mercury, Three Contact

Levelling,

6.38 Switch, Mercury, Levelling, Four Contact

6.39 Switch, Mercury, with Accel. eration Cut-Off

1%

AFL

b d

4 H9

14

IS : 2032 (Part XV) - 1976

7. TRANSFORMERS

7.1 Transformer with Two Separate windings

7.2 Transformer, Single Phase with Two Separate Windings

7.3 Transformer, Single Phase, Three Winding

7.4 Transformer, Single Phase, Tapped Primary

7.5 Transformer, Auto, Single Phase

Single Line Representation

Multi- Line Representation

x

LJ

rl

OR

15

IS : 2032 (Part XV) - 1976

Single Line Multi-Line Representation Representatiou

7.6 Transformer, Three Phase, Star Delta Connection

7.7 Transformer, Three Phase with Two Secondary Windings

7.8 Transformer, Auto, Three Phase

7.9 Transformer, Current, Bar Primary

7.10 Transductor, Core and Power Winding

7.11 Transductor, Control Winding

7.12 Typical Transductor

7.12.1 Separate Control

f-7

A

16

IS : 2032 (Part XV) - 1976

7.12.2 Common Control

NOTE -The dot indicates start of winding showing instantaneous polarity for phasing purposes. E

8. ROTATING MACHINES

8.1 Motor, General (MS =Synchronous motor) G

w

8.2 Generator, General (GS =Synchronous generator)

8.3 Brush on Commutator

8.4

8.5

Brush on Slip Ring

Shunt Field Winding (4 semicircles to be shown)

8.6 Series Field Winding’ (Three semicircles to be shown)

8.7 Compensating or Commutating Field Winding (Two semicircles to be shown)

8.8 DC, IL-Wire, Permanent Generator (G) or Motor (M) Q

M

Single Line Multi-Line Reptscntation Representation

8.9 DC, P-Wire, Generator (G) or Motor (M) Separately Excited

17

IS : 2032 (Part XV) - 1976

Singke Line Ah&i-Line Representation Repmentation

8.10 DG, P-Wire, Generator (G) or Motor (M), r%mpound Excited Short Shunt

8.11 DC, Two-Wire, Series Generator (G) or Motor (M)

8.12 DC, Two-Wire Shunt Generator (G) or Motor (M)

8.13 Motor, DC, Split Series Fields and Brake

Single Line Rejwesentation

Multi-Line Refresentation

8.14 AC Series Motor, Single Phase L&@ &-&-&

8.15 AC Series Motor, Two Phase 4 L-@$

8.16 AC Series Motor, Three Phase

8.17 Generator, AC with Separate Exciter

18

IS : 2032 (Part XV) - 1976

8.18 Synchronous Generator or Synchronous Motor (MS), Phase

VW Single

8.19 Permanent Magnet Synchronous Generator (GS) or Synchronous Motor (MS), Three Phase

8.20 Rotary Transformer DC to DC, Wound Field

8.21 Motor Generator DC to DC, Wound Fields

8.22 Invertor, ‘DC to AC, Wound Fields

9. INSTRUMENTS

9.1 Indicating Instrument, General

9.2 Ammeter

9.3 Voltmeter

9.4 Frequency Meter

b GS I-

- r-7

?!I GS 3-J

’ ‘bd

cl

C-J a _-’

IS : 2032 (Part XV) - 1976

9.5 Wattmeter

9.6 Varmeter

9.7 Temperature Indicator

(3 W

9.8 Synchro, General Symbol - The appropriate letters from the following list are to be inserted in the inner circle :

C = control First letter I = torque

R = resolver

(Inner circle = rotor Outer circle = stator)

r D = differential

I R = receiver

Succeeding I = transformer letters

I

X = transmitter B = rotatable sta-

tor winding

Typical example : Torque differential transmitter

9.9 Desynn Type Position or Pressure Transmitter

9.10 Desynn Type Position or Pressure Indicator

w I I L

I

20

IS : 2032 (Part XV) - 1976

9.11 Position or PressureTraknitter, Inductor Type

9.12 Position or Pressure Indica-or, Inductor Type

9.13 Gyroscope

10. LAMPS AND WARNING DEVICES

10.1 Lamp, Filament, Double Contact

10.2 Lamp, Neon, .AC Type

10.3 Lamp, Neon, DC Type (Voltage Stabilizer)

10.4 Lamp, Fluorescent

10.5 Lamp, Warning

10.6 Electroluminescent Source

cl @

--@-

-@-

t I

21

b3 ___.__~_ ..-

P __-_ _.-p- -.

IS : 2032 (Part XV) - 1976

10.7 Bell

10.8 Buzzer

10.9 Gong, Dual Control

10.10 Horn

10.11 Indicator, Magnetic, Two Posi- tion

10.12 Indicator, Magnetic, Three Position

10.13 Indicator, Magnetic, Flag Type

11. MISCELLANEOUS

11.1 Aerial, General Symbol

11.2 Aerial, Dipole

11.3 Aerial, Loop or Frame

fi‘

H

uzl

=e

22

11.4 Counterpoise

11.5 Spark Gap

11.6 Microphone

11.7 Receiver (Earphones)

11.8 Headset

11.9 Handset

11.10 Loud Speaker

11 .ll Cell, Primary or Secondary (Short line represents the Negative Pole)

1 i .12 Battery of Cells

11.13 Cell, Photoconductive, Symmc- trical Conduction

11 .I 4 Cell, Photoconductive, Asymme- trical- Conduction

23

IS : 2032 (Part xv) - 1976

1

--

=4 --+-

-it--+

* -e- -%+

IS : 2032 (Part XV) - 1976

11.15 Cell, Photovoltaic

11.16 Thermocouple (The thick line represents the Negative Pole)

11.17 Oscillator

11.18 Ignition Unit, High Energy =%F -r

11.19 Ignitor Plug (Typical)

11.20 Sqaib Igniter

11.21 Extinguisher, Fire, Single, Head with Connector

11.22 Extinguisher, Fire, Double Head with Connector6

11.23 Fire Detector (Continuous)

11.24 Static Invertor

11.25 Valve, Electroinagnetically Op- erated

--xl______,

-===>/l -T-----.’

--@I- =4 - ___

24

.

11.26 Rectifier

11.27 Thermal Relay

11.28 Overcarrent Relay

11.29 Relay Coil of a High Speed Relay ’ (Fast Operating and Fast Releasing)

NOTE - This symbol should be used only if it is desirable to emphasize that a certain relay is asentially more rapid than other relays and that use is made thereof.

11.30 Relay Coil of a Slow Operat- ing Relay

11.31 Relay Coil of a Slow Releasing Relay

11.32 Gas Filled Envelope

IS : 2932 (Part XV) - 1976

8

25

INDIAN STANDARDS ON GRAPHICAL SYMBOLS

IS: 2032 Graphical symbols used in electrotechnology:

(Part I)-1962 Classification and definitions of diagrams and charts (Part II)-1962 Kind of current, distribution systems and method of connection (Part III)-1962 Circuit elements and variability (Part IV)-1964 Rotating machines and transformers (Part V)-1965 Generating stations and sub-stations (Part VI)-1965 Motor starters (Part VII)-1974 Switchgear and auxiliaries (f;rst revtiion) (Part VIII)-1965 Semiconductor devices (Part IX)-1969 Electron tubes (other than microwave tubes) (Part X)-l969 Measuring instruments (Part XI)-1969 Electrical installation in buildings (Part XII)-1969 Electra-acoustic transducers & recording and reproducing systems (Part XIII)-1971 Microwave tubes (Part XIV)-1971 Microwave technology (Part XV)-1976 Aircraft electrical symbols (Part XVI)-1972 Aerials (Part XVII)-1975 Symbols for ferrite cores and magnetic storage matrices

c

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